[compiler-rt] [llvm] [compiler-rt] Add check-builtins target for LLVM_ENABLE_RUNTIMES builds (PR #166837)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-multistage` running on `ppc64le-clang-multistage-test` while building `compiler-rt,llvm` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/76/builds/13537

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'lit :: max-time.py' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 5
env -u FILECHECK_OPTS "/home/buildbots/llvm-external-buildbots/workers/env/bin/python3.8" /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/utils/lit/lit.py -j1 --order=lexical Inputs/max-time --max-time=5 2>&1  |  FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/utils/lit/tests/max-time.py
# executed command: env -u FILECHECK_OPTS /home/buildbots/llvm-external-buildbots/workers/env/bin/python3.8 /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/utils/lit/lit.py -j1 --order=lexical Inputs/max-time --max-time=5
# executed command: FileCheck /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/utils/lit/tests/max-time.py
# .---command stderr------------
# | /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/utils/lit/tests/max-time.py:8:10: error: CHECK: expected string not found in input
# | # CHECK: Skipped: 1
# |          ^
# | <stdin>:2:51: note: scanning from here
# | warning: reached timeout, skipping remaining tests
# |                                                   ^
# | <stdin>:7:2: note: possible intended match here
# |  Skipped: 2 (100.00%)
# |  ^
# | 
# | Input file: <stdin>
# | Check file: /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/utils/lit/tests/max-time.py
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |            1: -- Testing: 2 tests, 1 workers -- 
# |            2: warning: reached timeout, skipping remaining tests 
# | check:8'0                                                       X error: no match found
# |            3:  
# | check:8'0     ~
# |            4: Testing Time: 9.69s 
# | check:8'0     ~~~~~~~~~~~~~~~~~~~~
# |            5:  
# | check:8'0     ~
# |            6: Total Discovered Tests: 2 
# | check:8'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~
# |            7:  Skipped: 2 (100.00%) 
# | check:8'0     ~~~~~~~~~~~~~~~~~~~~~~
# | check:8'1      ?                     possible intended match
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1

--

********************

Step 10 (build stage 2) failure: 'ninja' (failure) (timed out)
...
[6302/6603] Linking CXX executable bin/llvm-opt-fuzzer
[6303/6603] Linking CXX executable bin/llvm-ir2vec
[6304/6603] Linking CXX executable bin/clang-nvlink-wrapper
[6305/6603] Linking CXX executable bin/bugpoint
[6306/6603] Linking CXX executable bin/llvm-dwarfutil
[6307/6603] Linking CXX executable bin/llvm-split
[6308/6603] Linking CXX executable bin/clang-linker-wrapper
[6309/6603] Linking CXX executable bin/opt
[6310/6603] Building CXX object tools/bugpoint-passes/CMakeFiles/BugpointPasses.dir/TestPasses.cpp.o
[6311/6603] Linking CXX shared module lib/BugpointPasses.so
command timed out: 1200 seconds without output running [b'ninja'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1919.328230

```

</details>

https://github.com/llvm/llvm-project/pull/166837